Earth kids enter a conflict between two factions of Transformers.
Transformers: Armada (Season 1)

First Encounter (1) (Episode 1) 8.0
Writer: Ryo Motohira
Air date: 2003-01-10
Runtime: 21 min
Overview: Children unwittingly reopen an ancient battle between Autobots and Decepticons.

Metamorphosis (2) (Episode 2) 5.0
Writer: Ryo Motohira
Air date: 2003-01-17
Runtime: 21 min
Overview: Alex, Rad and Carlos find the cargo hold of the Exodus underground and are adopted by three minicons.

Base (3) (Episode 3)
Writer: Ryo Motohira
Air date: 2003-01-24
Runtime: 21 min
Overview: Alexis, Rad and Carlos introduce themselves to Optimus Prime, Hot Rod and First Aid.

Comrade (Episode 4)
Writer: Akira Okeya
Air date: 2003-01-31
Runtime: 21 min
Overview: The children join the Autobot team and head out on their first mission to find a newly waking minicon.

Soldier (Episode 5)
Writer: Shōji Tonoike
Air date: 2003-02-07
Runtime: 21 min
Overview: Autobots discover a MiniCon at the South Pole.

Jungle (Episode 6)
Writer: Isao Shizuya
Air date: 2003-02-14
Runtime: 21 min
Overview: The newest minicon activates in the middle of a forest: both sides fight for it.

Carnival (Episode 7)
Writer: Ryo Motohira
Air date: 2003-02-21
Runtime: 21 min
Overview: Rad and Carlos smuggle their minicons out of the base to visit the town's carnival.

Palace (Episode 8)
Writer: Akira Okeya
Air date: 2003-02-28
Runtime: 21 min
Overview: In an ancient palace deep beneath the Sahara another minicon is waking. Who will reach it first?

Confrontation (Episode 9)
Writer: Shōji Tonoike
Air date: 2003-03-07
Runtime: 21 min
Overview: The Decepticons capture all the children to use as hostages in exchange for the Autobots's minicons.

Underground (Episode 10)
Writer: Isao Shizuya
Air date: 2003-03-14
Runtime: 21 min
Overview: The latest minicon re-activates in the subway system of a large city.

Ruin (Episode 11)
Writer: Ryo Motohira
Air date: 2003-03-21
Runtime: 21 min
Overview: From an ancient submerged city a beautiful girl issues a warning about the devastating power.

Prehistory (Episode 12)
Writer: Shōji Tonoike
Air date: 2003-03-28
Runtime: 21 min
Overview: The children learn more about the history of the minicons and the war.

Swoop (Episode 13)
Writer: Isao Shizuya
Air date: 2003-04-04
Runtime: 21 min
Overview: The Decepticons gain access to the Autobot base and attempt to take the other two minicons.

Overmatch (Episode 14)
Writer: Ryo Motohira
Air date: 2003-04-11
Runtime: 21 min
Overview: Hot Shot proves himself very skilled with the Star Sabre.

Gale (Episode 15)
Writer: Akira Okeya
Air date: 2003-04-18
Runtime: 21 min
Overview: A new minicon activates inside a highway tunnel.

Credulous (Episode 16)
Writer: Shōji Tonoike
Air date: 2003-04-25
Runtime: 21 min
Overview: Grabbing onto Megatron at the end of a battle, Hot Shot and Sideways are transported to the moon.

Conspiracy (Episode 17)
Writer: Isao Shizuya
Air date: 2003-05-02
Runtime: 21 min
Overview: Decepticons mutiny while searching for MiniCons in a jungle.

Trust (Episode 18)
Writer: Ryo Motohira
Air date: 2003-05-09
Runtime: 21 min
Overview: Autobots and Decepticons face off amongst snowy mountains in the battle for the latest minicon.

Vacation (Episode 19)
Writer: Akira Okeya
Air date: 2003-05-16
Runtime: 21 min
Overview: A weekend's camping trip to the valley below the dam goes wrong when a violent storm moves in.

Reinforcement (Episode 20)
Writer: Shōji Tonoike
Air date: 2003-05-23
Runtime: 21 min
Overview: Autobot Blurr joins the team, but proves himself not much of a team player.

Decisive Battle (Episode 21)
Writer: Isao Shizuya
Air date: 2003-05-30
Runtime: 21 min
Overview: Megatron plots to destroy the Autobots once and for all.

Vow (Episode 22)
Writer: Akira Okeya
Air date: 2003-06-06
Runtime: 21 min
Overview: Megatron uses the Minicons to lure the Autobots into a trap.

Rebellion (Episode 23)
Writer: Akira Okeya
Air date: 2003-06-13
Runtime: 21 min
Overview: Starscream challenges Megatron for control of the Decepitcons.

Chase (Episode 24)
Writer: Ryo Motohira
Air date: 2003-06-20
Runtime: 21 min
Overview: Trapped with Sideways, Alexis, Rad, Carlos and their minicons become aware of a massive evil entity.

Tactician (Episode 25)
Writer: Shōji Tonoike
Air date: 2003-06-27
Runtime: 21 min
Overview: A new transformer enters the solar system.

Link Up (Episode 26)
Writer: Isao Shizuya
Air date: 2003-07-04
Runtime: 21 min
Overview: With Optimus damaged and temporarily out of commission, the newly-arrived Jetfire takes command.

Detection (Episode 27)
Writer: Ryo Motohira
Air date: 2003-07-11
Runtime: 21 min
Overview: On the moon, Thrust continues his plotting with Megatron.

Awakening (Episode 28)
Writer: Shōji Tonoike
Air date: 2003-07-18
Runtime: 21 min
Overview: The massive Tidalwave joins the Decepticons, but is, seemingly, defeated in battle by Hot Shot and Blurr.

Desperate (Episode 29)
Writer: Akira Okeya
Air date: 2003-07-25
Runtime: 21 min
Overview: The kids try to gather the three Requiem Blaster minicons together.

Runaway (Episode 30)
Writer: Isao Shizuya
Air date: 2003-08-01
Runtime: 21 min
Overview: The minicons want to be in charge of their own destinies, so the kids sneak the new team out of the base.

Past (1) (Episode 31)
Writer: Shōji Tonoike
Air date: 2003-08-08
Runtime: 21 min
Overview: Enthusiastic young Sideswipe joins the team and Optimus tasks Hot Shot with training him.

Past (2) (Episode 32)
Writer: Shōji Tonoike
Air date: 2003-08-15
Runtime: 21 min
Overview: Desperate to make amends to his old friend, Hot Shot allows Wheeljack to shoot him, but this isn't enough.

Sacrifice (Episode 33)
Writer: Akira Okeya
Air date: 2003-08-22
Runtime: 21 min
Overview: Megatron sacrifices Starscream, leaving him to face the Autobots alone.

Regeneration (Episode 34)
Writer: Isao Shizuya
Air date: 2003-08-29
Runtime: 21 min
Overview: Hearing Megatron say he is nothing more than disposable cannon fodder, Starscream defects with the Star Sabre.

Rescue (Episode 35)
Writer: Ryo Motohira
Air date: 2003-09-05
Runtime: 21 min
Overview: With Starscream's help, the Autobots infiltrate the Decepticon moon base.

Mars (Episode 36)
Writer: Akira Okeya
Air date: 2003-09-12
Runtime: 21 min
Overview: Alexis tracks a minicon in the vicinity of Mars.

Crack (Episode 37)
Writer: Isao Shizuya
Air date: 2003-09-19
Runtime: 21 min
Overview: Starscream trusts Thrust and returns to the moon base.

Threaten (Episode 38)
Writer: Shōji Tonoike
Air date: 2003-09-23
Runtime: 21 min
Overview: Sabre, Shield and Blaster together create the Hydra Cannon.

Crisis (Episode 39)
Writer: Ryo Motohira
Air date: 2003-09-26
Runtime: 21 min
Overview: Optimus and Jetfire attack the ship, but can't stop the Hydra Cannon being deployed.

Remorse (Episode 40)
Writer: Akira Okeya
Air date: 2003-10-03
Runtime: 21 min
Overview: Hot Shot insists they should take vengeance on the Decepticons.

Depart (Episode 41)
Writer: Isao Shizuya
Air date: 2003-10-10
Runtime: 21 min
Overview: With the Autobot ship ready to leave, Hot Shot refuses to let the children accompany them.

Miracle (Episode 42)
Writer: Shōji Tonoike
Air date: 2003-10-17
Runtime: 21 min
Overview: While the Axalon chases the Decepticon ship, hundreds of minicons appear.

Puppet (Episode 43) 10.0
Writer: Ryo Motohira
Air date: 2003-10-24
Runtime: 21 min
Overview: Hot Shot and Red Alert are sucked through a wormhole.

Uprising (Episode 44)
Writer: Akira Okeya
Air date: 2003-10-31
Runtime: 21 min
Overview: The 'Bots reach Cybertron to find Megatron (now calling himself Galvatron) already winning the war.

Dash (Episode 45)
Writer: Isao Shizuya
Air date: 2003-11-07
Runtime: 21 min
Overview: While the battle continues, Hot Shot goes to Cybertron to try to convince Galvatron of the impending danger.

Drift (Episode 46)
Writer: Ryo Motohira
Air date: 2003-11-14
Runtime: 21 min
Overview: Thrust flees into the depths of Cybertron, pursued by Hot Shot and Wheeljack - and, separately, Starscream.

Portent (Episode 47)
Writer: Shōji Tonoike
Air date: 2003-11-21
Runtime: 21 min
Overview: Thrust joins Sideways by passing through a portal underground.

Cramp (Episode 48) 10.0
Writer: Akira Okeya
Air date: 2003-11-28
Runtime: 21 min
Overview: Starscream prepares to do whatever it takes to convince Galvatron the threat of Unicron is real.

Alliance (Episode 49)
Writer: Isao Shizuya
Air date: 2003-12-05
Runtime: 21 min
Overview: As Unicron begins to awaken, Optimus and Galvatron decide to forgo their battle.

Union (1) (Episode 50)
Writer: Shōji Tonoike
Air date: 2003-12-12
Runtime: 21 min
Overview: The only way to defeat Unicron is to wake the minicons inside him and attack from within as well as without.

Origin (2) (Episode 51)
Writer: Ryo Motohira
Air date: 2003-12-19
Runtime: 21 min
Overview: The purpose and meaning behind the endless war is revealed.

Mortal Combat (3) (Episode 52)
Writer: Ryo Motohira
Air date: 2003-12-26
Runtime: 21 min
Overview: Thinking Unicron is defeated, Galvatron and Optimus Prime resume their battle.

Seasons

Episodes 52